/**********************************************************************
** Copyright (C) 2005-2007 Trolltech ASA.  All rights reserved.
**
** This file is part of Qt Designer.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
** licenses may use this file in accordance with the Qt Commercial License
** Agreement provided with the Software.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
**   information about Qt Commercial License Agreements.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/

#include "formwindow.h"
#include "defs.h"
#include "mainwindow.h"
#include "widgetfactory.h"
#include "sizehandle.h"
#include "metadatabase.h"
#include "resource.h"
#include "layout.h"
#include "connectiondialog.h"
#include <widgetdatabase.h>
#include "pixmapchooser.h"
#include "orderindicator.h"
#include "hierarchyview.h"
#include "designerappiface.h"
#include "menubareditor.h"
#define NO_STATIC_COLORS
#include "globaldefs.h"

#include <stdlib.h>

#include <qevent.h>
#include <qpainter.h>
#include <qpen.h>
#include <qlabel.h>
#include <qobjectlist.h>
#include <qtimer.h>
#include <qapplication.h>
#include <qlayout.h>
#include <qspinbox.h>
#include <qstatusbar.h>
#include <qapplication.h>
#include <qpalette.h>
#include <qmessagebox.h>
#include <qpopupmenu.h>
#include <qsizegrip.h>
#include <qpushbutton.h>
#include <qwhatsthis.h>
#include <qmetaobject.h>
#include <qtooltip.h>
#include <qfeatures.h>
#include <qaccel.h>
#include <qpixmapcache.h>
#include <qbitmap.h>
#include <qsplitter.h>

// FormWindow should be able to work to some limited degree
// (existance, loading) without a MainWindow. Functions which require
// a MainWindow in theory should never be called if no MainWindow
// exists. These macros are used to let us know if that happens anyway
// and to ensure that we don't crash
#define CHECK_MAINWINDOW Q_ASSERT( mainWindow() ); if ( !mainWindow() ) return
#define CHECK_MAINWINDOW_VALUE( v ) Q_ASSERT( mainWindow() ); if ( !mainWindow() ) return v

static void setCursorToAll( const QCursor &c, QWidget *start )
{
    start->setCursor( c );
    QObjectList *l = (QObjectList*)start->children();
    if ( l ) {
	for ( QObject *o = l->first(); o; o = l->next() ) {
	    if ( o->isWidgetType() && !::qt_cast<SizeHandle*>(o) )
		setCursorToAll( c, ( (QWidget*)o ) );
	}
    }
}

static void restoreCursors( QWidget *start, FormWindow *fw )
{
    if ( fw->widgets()->find( start ) )
	start->setCursor( MetaDataBase::cursor( start ) );
    else
	start->setCursor( Qt::ArrowCursor );
    QObjectList *l = (QObjectList*)start->children();
    if ( l ) {
	for ( QObject *o = l->first(); o; o = l->next() ) {
	    if ( o->isWidgetType() && !::qt_cast<SizeHandle*>(o) )
		restoreCursors( ( (QWidget*)o ), fw );
	}
    }
}

#if defined(Q_WS_WIN32) // #### needed for the workaround for repaint problem on windows
#include <qt_windows.h>
static void flickerfree_update( QWidget *w )
{
    InvalidateRect( w->winId(), 0, FALSE );
}
#endif

/*!
  \class FormWindow formwindow.h
  \brief Editor window for a form

  The FormWindow is the widget which is used as editor for forms. It
  handles inserting, deleting, moving, resizing, etc. of widgets.

  Normally multiple formwindows are used at the same time in the
  Designer. So each formwindow has its own undo/redo buffer, etc.

  Also the formwindow has some signals to inform e.g. about selection
  changes which is interesting for the PropertyEditor.

  For handling the events of the child widgets (moving, etc.) the
  handleMousePress(), etc. functions are called from the application
  event filter which is implemented in MainWindow::eventFilter().
*/

FormWindow::FormWindow( FormFile *f, MainWindow *mw, QWidget *parent, const char *name )
    : QWidget( parent, name, WDestructiveClose ), mainwindow( mw ),
      commands( 100 ), pixInline( TRUE ), pixProject( FALSE )
{
    ff = f;
    init();
    initSlots();
}

FormWindow::FormWindow( FormFile *f, QWidget *parent, const char *name )
    : QWidget( parent, name, WDestructiveClose ), mainwindow( 0 ),
      commands( 100 ), pixInline( TRUE )
{
    ff = f;
    init();
}

void FormWindow::init()
{
    fake = qstrcmp( name(), "qt_fakewindow" ) == 0;
    MetaDataBase::addEntry( this );
    ff->setFormWindow( this );
    iface = 0;
    proj = 0;
    propertyWidget = 0;
    toolFixed = FALSE;
    checkedSelectionsForMove = FALSE;
    mContainer = 0;
    startWidget = endWidget = 0;
    currTool = POINTER_TOOL;
    unclippedPainter = 0;
    widgetPressed = FALSE;
    drawRubber = FALSE;
    setFocusPolicy( ClickFocus );
    sizePreviewLabel = 0;
    checkSelectionsTimer = new QTimer( this, "checkSelectionsTimer" );
    connect( checkSelectionsTimer, SIGNAL( timeout() ),
	     this, SLOT( invalidCheckedSelections() ) );
    updatePropertiesTimer = new QTimer( this );
    connect( updatePropertiesTimer, SIGNAL( timeout() ),
	     this, SLOT( updatePropertiesTimerDone() ) );
    showPropertiesTimer = new QTimer( this );
    connect( showPropertiesTimer, SIGNAL( timeout() ),
	     this, SLOT( showPropertiesTimerDone() ) );
    selectionChangedTimer = new QTimer( this );
    connect( selectionChangedTimer, SIGNAL( timeout() ),
	     this, SLOT( selectionChangedTimerDone() ) );
    windowsRepaintWorkaroundTimer = new QTimer( this );
    connect( windowsRepaintWorkaroundTimer, SIGNAL( timeout() ),
	     this, SLOT( windowsRepaintWorkaroundTimerTimeout() ) );
    insertParent = 0;
    connect( &commands, SIGNAL( undoRedoChanged( bool, bool, const QString &, const QString & ) ),
	     this, SIGNAL( undoRedoChanged( bool, bool, const QString &, const QString & ) ) );
    propShowBlocked = FALSE;

    setIcon( QPixmap::fromMimeSource( "designer_form.png" ) );

    connect( &commands, SIGNAL( modificationChanged( bool ) ),
	     this, SLOT( modificationChanged( bool ) ) );
    buffer = 0;

    QWidget *w = WidgetFactory::create( WidgetDatabase::idFromClassName( "QFrame" ), this );
    setMainContainer( w );
    propertyWidget = w;
    targetContainer = 0;
    hadOwnPalette = FALSE;

    defSpacing = BOXLAYOUT_DEFAULT_SPACING;
    defMargin = BOXLAYOUT_DEFAULT_MARGIN;
    hasLayoutFunc = FALSE;
}

void FormWindow::setMainWindow( MainWindow *w )
{
    mainwindow = w;
    MetaDataBase::addEntry( this );
    initSlots();
}

void FormWindow::initSlots()
{
    if ( isFake() )
	return;
    Q_ASSERT( project() || MainWindow::self );
    if ( !project() && !MainWindow::self )
	return;
    Project *p = project() ? project() : MainWindow::self->currProject();
    if ( p && p->isCpp() ) {
	QString code = formFile()->code();
	if ( code.isEmpty() )
	    formFile()->setCode( formFile()->codeComment() );
    }
}

FormWindow::~FormWindow()
{
    if ( MainWindow::self && MainWindow::self->objectHierarchy()->formWindow() == this )
	MainWindow::self->objectHierarchy()->setFormWindow( 0, 0 );

    MetaDataBase::clear( this );
    if ( ff )
	ff->setFormWindow( 0 );
    delete iface;
}

void FormWindow::closeEvent( QCloseEvent *e )
{
    QGuardedPtr<FormWindow> that = this;
    if ( ff->closeEvent() && ( !that || ( mainwindow && mainwindow->unregisterClient( this ) ) ) )
	e->accept();
    else
	e->ignore();
}

void FormWindow::paintGrid( QWidget *w, QPaintEvent *e )
{
    if ( !mainWindow() || !mainWindow()->showGrid() )
	return;
    QPixmap grid;
    QString grid_name;
    grid_name.sprintf("FormWindowGrid_%d_%d", mainWindow()->grid().x(), mainWindow()->grid().y());
    if( !QPixmapCache::find( grid_name, grid ) ) {
	grid = QPixmap( 350 + ( 350 % mainWindow()->grid().x() ), 350 + ( 350 % mainWindow()->grid().y() ) );
	grid.fill( colorGroup().color( QColorGroup::Foreground ) );
	QBitmap mask( grid.width(), grid.height() );
	mask.fill( color0 );
	QPainter p( &mask );
	p.setPen( color1 );
	for ( int y = 0; y < grid.width(); y += mainWindow()->grid().y()) {
	    for ( int x = 0; x < grid.height(); x += mainWindow()->grid().x() ) {
		p.drawPoint( x, y );
	    }
	}
	grid.setMask( mask );
	QPixmapCache::insert( grid_name, grid );
    }
    QPainter p( w );
    p.setClipRegion( e->rect() );
    p.drawTiledPixmap( QRect( 0, 0, width(), height() ), grid );
}

/*!  For operations like drawing a rubber band or drawing the rect
  when inserting a new widget, a unclipped painter (which draws also
  on child widgets) is needed. This method does all the initialization.
*/

void FormWindow::beginUnclippedPainter( bool doNot )
{
    endUnclippedPainter();
    bool unclipped = testWFlags( WPaintUnclipped );
    setWFlags( WPaintUnclipped );
    unclippedPainter = new QPainter;
    unclippedPainter->begin( this );
    if ( !unclipped )
	clearWFlags( WPaintUnclipped );
    if ( doNot ) {
	unclippedPainter->setPen( QPen( color0, 2 ) );
	unclippedPainter->setRasterOp( NotROP );
    }
}

/*!
  Gets rid of an open unclipped painter.

  \sa beginUnclippedPainter()
*/

void FormWindow::endUnclippedPainter()
{
    if ( unclippedPainter )
	unclippedPainter->end();
    delete unclippedPainter;
    unclippedPainter = 0;
}

QPoint FormWindow::gridPoint( const QPoint &p )
{
    return QPoint( ( p.x() / grid().x() ) * grid().x(),
		   ( p.y() / grid().y() ) * grid().y() );
}

void FormWindow::drawSizePreview( const QPoint &pos, const QString& text )
{
    unclippedPainter->save();
    unclippedPainter->setPen( QPen( colorGroup().foreground(), 1  ));
    unclippedPainter->setRasterOp( CopyROP );
    if ( !sizePreviewPixmap.isNull() )
	unclippedPainter->drawPixmap( sizePreviewPos, sizePreviewPixmap );
    if ( text.isNull() ) {
	sizePreviewPixmap = QPixmap(); // set null again
	unclippedPainter->restore();
	return;
    }
    QRect r  =  fontMetrics().boundingRect( 0, 0, 0, 0, AlignCenter, text );
    r = QRect( pos + QPoint( 10, 10 ), r.size() + QSize( 5, 5 ) );

    checkPreviewGeometry( r );

    sizePreviewPos = r.topLeft();
    sizePreviewPixmap = QPixmap::grabWindow( winId(), r.x(), r.y(), r.width(), r.height() );
    unclippedPainter->setBrush( QColor( 255, 255, 128 ) );
    unclippedPainter->drawRect( r );
    unclippedPainter->drawText( r, AlignCenter, text );
    unclippedPainter->restore();
}

void FormWindow::insertWidget()
{
    CHECK_MAINWINDOW;
    if ( !insertParent )
	return;

    if ( currTool == POINTER_TOOL )
	return;

    bool useSizeHint = !oldRectValid || ( currRect.width() < 2 && currRect.height() < 2 );
    Orientation orient = Horizontal;
    QString n = WidgetDatabase::className( currTool );
    if (  useSizeHint && ( n == "Spacer" || n == "QSlider" || n == "Line" || n == "QScrollBar" ) ) {
	QPopupMenu m( mainWindow() );
	m.insertItem( tr( "&Horizontal" ) );
	int ver = m.insertItem( tr( "&Vertical" ) );
	int r = m.exec( QCursor::pos() );
	if ( r == ver )
	    orient = Vertical;
    }


    QWidget *w = WidgetFactory::create( currTool, insertParent, 0, TRUE, &currRect, orient );
    if ( !w )
	return;

    if ( !savePixmapInline() && currTool == WidgetDatabase::idFromClassName( "PixmapLabel" ) ) { // ### what to do for pixmaps in project
	QPixmap pix;
	// we have to force the pixmap to get a new and unique serial number. Unfortunately detatch() doesn't do that
	pix.convertFromImage( QPixmap::fromMimeSource( "designer_image.png" ).convertToImage() );
	( (QLabel*)w )->setPixmap( pix );
    }
    int id = WidgetDatabase::idFromClassName( WidgetFactory::classNameOf(w) );
    if ( WidgetDatabase::isCustomWidget( id ) ) {
	QWhatsThis::add( w, tr("<b>A %1 (custom widget)</b> "
			    "<p>Click <b>Edit Custom Widgets...</b> in the <b>Tools|Custom</b> "
			    "menu to add and change custom widgets. You can add "
			    "properties as well as signals and slots to integrate custom widgets into "
			    "<i>IndigoSCADA HMI Designer</i>, and provide a pixmap which will be used to represent "
			    "the widget on the form.</p>")
			    .arg(WidgetDatabase::toolTip( id )) );
	QToolTip::add( w, tr("A %1 (custom widget)").arg(WidgetDatabase::toolTip( id )) );
    } else {
	QString tt = WidgetDatabase::toolTip( id );
	QString wt = WidgetDatabase::whatsThis( id );
	if ( !wt.isEmpty() && !tt.isEmpty() )
	    QWhatsThis::add( w, QString("<b>A %1</b><p>%2</p>").arg( tt ).arg( wt ) );
    }

    QString s = w->name();
    unify( w, s, TRUE );
    w->setName( s );
    insertWidget( w );
    QRect r( currRect );
    if ( !oldRectValid ||
	 ( currRect.width() < 2 && currRect.height() < 2 ) )
	r = QRect( rectAnchor, QSize( 0, 0 ) );

    QPoint p = r.topLeft();
    p = mapToGlobal( p );
    p = insertParent->mapFromGlobal( p );
    r = QRect( p, r.size() );

    if ( useSizeHint ) {
	if ( n == "Spacer" ) {
	    if ( orient == Vertical ) {
		r.setWidth( 20 );
		r.setHeight( 40 );
	    } else {
		r.setWidth( 40 );
		r.setHeight( 20 );
	    }
	} else {
	    r.setWidth( w->sizeHint().width() );
	    r.setHeight( w->sizeHint().height() );
	}
    }

    if ( r.width() < 2 * grid().x() )
	r.setWidth( 2 * grid().x() );
    if ( r.height() < 2 * grid().y() )
	r.setHeight( 2 * grid().y() );

    const QObjectList *l = insertParent->children();
    QObjectListIt it( *l );
    QWidgetList lst;
    if ( WidgetDatabase::isContainer( WidgetDatabase::idFromClassName( WidgetFactory::classNameOf( w ) ) ) ) {
	for ( ; it.current(); ) {
	    QObject *o = it.current();
	    ++it;
	    if ( o->isWidgetType() &&
		 ( (QWidget*)o )->isVisibleTo( this ) &&
		 insertedWidgets.find( (QWidget*)o ) && o != w ) {
		QRect r2( ( (QWidget*)o )->pos(),
			  ( (QWidget*)o )->size() );
		if ( r.contains( r2 ) )
		    lst.append( (QWidget*)o );
	    }
	}
    }

    if ( !lst.isEmpty() ) {
	QWidget *pw = WidgetFactory::containerOfWidget( w );
        if (pw) {
            QValueList<QPoint> op, np;
            for ( QWidget *i = lst.first(); i; i = lst.next() ) {
                op.append( i->pos() );
                QPoint pos = pw->mapFromGlobal( i->mapToGlobal( QPoint( 0, 0 ) ) );
                pos -= r.topLeft();
                np.append( pos );
            }
            
            MoveCommand *mv = new MoveCommand( tr( "Reparent Widgets" ), this,
                                               lst, op, np, insertParent, pw );

            if ( !toolFixed )
                mainwindow->resetTool();
            else
                setCursorToAll( CrossCursor, w );
            
            InsertCommand *cmd = new InsertCommand( tr( "Insert %1" ).arg( w->name() ), this, w, r );
            
            QPtrList<Command> commands;
            commands.append( mv );
            commands.append( cmd );
            
            MacroCommand *mc = new MacroCommand( tr( "Insert %1" ).arg( w->name() ), this, commands );
            commandHistory()->addCommand( mc );
            mc->execute();
        }
    } else {
	if ( !toolFixed )
	    mainwindow->resetTool();
	else
	    setCursorToAll( CrossCursor, w );

	InsertCommand *cmd = new InsertCommand( tr( "Insert %1" ).arg( w->name() ), this, w, r );
	commandHistory()->addCommand( cmd );
	cmd->execute();
    }

    TemplateWizardInterface *iface = mainWindow()->templateWizardInterface( w->className() );
    if ( iface ) {
	iface->setup( w->className(), w, iFace(), mainWindow()->designerInterface() );
	iface->release();
    }
}

void FormWindow::insertWidget( QWidget *w, bool checkName )
{
    if ( !w )
	return;
    if ( checkName ) {
	QString s = w->name();
	unify( w, s, TRUE );
	w->setName( s );
    }

    MetaDataBase::addEntry( w );
    int id = WidgetDatabase::idFromClassName( WidgetFactory::classNameOf(w) );
    if ( WidgetDatabase::isCustomWidget( id ) ) {
	QWhatsThis::add( w, tr("<b>A %1 (custom widget)</b> "
			    "<p>Click <b>Edit Custom Widgets...</b> in the <b>Tools|Custom</b> "
			    "menu to add and change custom widgets. You can add "
			    "properties as well as signals and slots to integrate custom widgets into "
			    "<i>IndigoSCADA HMI Designer</i>, and provide a pixmap which will be used to represent "
			    "the widget on the form.</p>")
			    .arg(WidgetDatabase::toolTip( id )) );
	QToolTip::add( w, tr("A %1 (custom widget)").arg(WidgetDatabase::toolTip( id )) );
    } else {
	QString tt = WidgetDatabase::toolTip( id );
	QString wt = WidgetDatabase::whatsThis( id );
	if ( !wt.isEmpty() && !tt.isEmpty() )
	    QWhatsThis::add( w, QString("<b>A %1</b><p>%2</p>").arg( tt ).arg( wt ) );
    }

    restoreCursors( w, this );
    widgets()->insert( w, w );
    w->show();
}

void FormWindow::removeWidget( QWidget *w )
{
    MetaDataBase::removeEntry( w );
    widgets()->take( w );
}

void FormWindow::handleContextMenu( QContextMenuEvent *e, QWidget *w )
{
    CHECK_MAINWINDOW;
    switch ( currTool ) {
    case POINTER_TOOL: {
	if ( !isMainContainer( w ) && qstrcmp( w->name(), "central widget" ) != 0 ) { // press on a child widget
	    raiseChildSelections( w ); // raise selections and select widget
	    selectWidget( w );
	    // if widget is laid out, find the first non-laid out super-widget
	    QWidget *realWidget = w; // but store the original one
	    while ( w->parentWidget() &&
		    ( WidgetFactory::layoutType( w->parentWidget()) != WidgetFactory::NoLayout ||
		      !insertedWidgets.find(w) ) )
		w = w->parentWidget();
	    if ( ::qt_cast<QMainWindow*>(mainContainer()) && ((QMainWindow*)mainContainer())->centralWidget() == realWidget ) {
		e->accept();
		mainwindow->popupFormWindowMenu( e->globalPos(), this );
	    } else {
		e->accept();
		mainwindow->popupWidgetMenu( e->globalPos(), this, realWidget);
	    }
	} else {
	    e->accept();
	    clearSelection();
	    mainwindow->popupFormWindowMenu( e->globalPos(), this );
	}
	break; }
    default:
	break;
    }
}

void FormWindow::handleMousePress( QMouseEvent *e, QWidget *w )
{
    CHECK_MAINWINDOW;
    checkedSelectionsForMove = FALSE;
    checkSelectionsTimer->stop();
    if ( !sizePreviewLabel ) {
	sizePreviewLabel = new QLabel( this );
	sizePreviewLabel->hide();
	sizePreviewLabel->setBackgroundColor( QColor( 255, 255, 128 ) );
	sizePreviewLabel->setFrameStyle( QFrame::Plain | QFrame::Box );
    }

    switch ( currTool ) {
    case POINTER_TOOL:
	if ( !isMainContainer( w ) && qstrcmp( w->name(), "central widget" ) != 0 ) { // press on a child widget
	    // if the clicked widget is not in a layout, raise it
	    if ( !w->parentWidget() || WidgetFactory::layoutType( w->parentWidget() ) == WidgetFactory::NoLayout )
		w->raise();
	    if ( ( e->state() & ControlButton ) ) { // with control pressed, always start rubber band selection
		drawRubber = TRUE;
		currRect = QRect( 0, 0, -1, -1 );
		startRectDraw( mapFromGlobal( e->globalPos() ), e->globalPos(), this, Rubber );
		break;
	    }

	    bool sel = isWidgetSelected( w );
	    if ( !( ( e->state() & ControlButton ) || ( e->state() & ShiftButton ) ) ) { // control not pressed...
		if ( !sel ) { // ...and widget no selectted: unselect all
		    clearSelection( FALSE );
		} else { // ...widget selected
		    // only if widget has a layout (it is a layout meta widget or a laid out container!), unselect its childs
		    if ( WidgetFactory::layoutType( w ) != WidgetFactory::NoLayout ) {
			QObjectList *l = w->queryList( "QWidget" );
			setPropertyShowingBlocked( TRUE );
			for ( QObject *o = l->first(); o; o = l->next() ) {
			    if ( !o->isWidgetType() )
				continue;
			    if ( insertedWidgets.find( (QWidget*)o ) )
				selectWidget( (QWidget*)o, FALSE );
			}
			setPropertyShowingBlocked( FALSE );
			delete l;
		    }
		}
		qApp->processEvents();
	    }
	    if ( ( ( e->state() & ControlButton ) || ( e->state() & ShiftButton ) ) &&
		 sel && e->button() == LeftButton ) { // control pressed and selected, unselect widget
		selectWidget( w, FALSE );
		break;
	    }

	    raiseChildSelections( w ); // raise selections and select widget
	    selectWidget( w );

	    // if widget is laid out, find the first non-laid out super-widget
	    while ( w->parentWidget() &&
		    ( WidgetFactory::layoutType( w->parentWidget()) != WidgetFactory::NoLayout || !insertedWidgets.find(w) ) )
		w = w->parentWidget();

	    if ( e->button() == LeftButton ) { // left button: store original geometry and more as the widget might start moving
		widgetPressed = TRUE;
		widgetGeom = QRect( w->pos(), w->size() );
		oldPressPos = w->mapFromGlobal( e->globalPos() );
		origPressPos = oldPressPos;
		checkedSelectionsForMove = FALSE;
		moving.clear();
		if ( w->parentWidget() && !isMainContainer( w->parentWidget() ) && !isCentralWidget( w->parentWidget() ) ) {
		    targetContainer = w->parentWidget();
		    hadOwnPalette = w->parentWidget()->ownPalette();
		    restorePalette = w->parentWidget()->palette();
		}
	    }
	} else { // press was on the formwindow
	    if ( e->button() == LeftButton ) { // left button: start rubber selection and show formwindow properties
		drawRubber = TRUE;
		if ( !( ( e->state() & ControlButton ) || ( e->state() & ShiftButton ) ) ) {
		    clearSelection( FALSE );
		    QObject *opw = propertyWidget;
		    propertyWidget = mainContainer();
		    if ( opw->isWidgetType() )
			repaintSelection( (QWidget*)opw );
		}
		currRect = QRect( 0, 0, -1, -1 );
		startRectDraw( mapFromGlobal( e->globalPos() ), e->globalPos(), this, Rubber );
	    }
	}
	break;
    case CONNECT_TOOL:
    case BUDDY_TOOL:
	if ( e->button() != LeftButton )
	    break;
	validForBuddy = FALSE;
	if ( currTool == BUDDY_TOOL ) {
	    if ( !::qt_cast<QLabel*>(w) )
		break;
	    clearSelection( FALSE );
	    validForBuddy = TRUE;
	    mainWindow()->statusBar()->message( tr( "Set buddy for '%1' to..." ).arg( w->name() ) );
	} else {
	    mainWindow()->statusBar()->message( tr( "Connect '%1' with..." ).arg( w->name() ) );
	}
	saveBackground();
	startPos = mapFromGlobal( e->globalPos() );
	currentPos = startPos;
	startWidget = designerWidget( w );
	endWidget = startWidget;
	beginUnclippedPainter( FALSE );
	drawConnectionLine();
	break;
    case ORDER_TOOL:
	if ( !isMainContainer( w ) ) { // press on a child widget
	    orderedWidgets.removeRef( w );
	    orderedWidgets.append( w );
	    for ( QWidget *wid = orderedWidgets.last(); wid; wid = orderedWidgets.prev() ) {
		int i = stackedWidgets.findRef( wid );
		if ( i != -1 ) {
		    stackedWidgets.removeRef( wid );
		    stackedWidgets.insert( 0, wid );
		}
	    }
	    QWidgetList oldl = MetaDataBase::tabOrder( this );
	    TabOrderCommand *cmd = new TabOrderCommand( tr( "Change Tab Order" ), this, oldl, stackedWidgets );
	    cmd->execute();
	    commandHistory()->addCommand( cmd, TRUE );
	    updateOrderIndicators();
	}
	break;
    default: // any insert widget tool
	if ( e->button() == LeftButton ) {
	    insertParent = WidgetFactory::containerOfWidget( mainContainer() ); // default parent for new widget is the formwindow
	    if ( !isMainContainer( w ) ) { // press was not on formwindow, check if we can find another parent
		QWidget *wid = w;
		for (;;) {
		    int id = WidgetDatabase::idFromClassName( WidgetFactory::classNameOf( wid ) );
		    if ( ( WidgetDatabase::isContainer( id ) || wid == mainContainer() ) &&
			 !::qt_cast<QLayoutWidget*>(wid) && !::qt_cast<QSplitter*>(wid) ) {
			insertParent = WidgetFactory::containerOfWidget( wid ); // found another parent, store it
			break;
		    } else {
			wid = wid->parentWidget();
			if ( !wid )
			    break;
		    }
		}
	    }
	    startRectDraw( w->mapFromGlobal( e->globalPos() ), e->globalPos(), w, Insert );
	}
	break;
    }
}

void FormWindow::handleMouseDblClick( QMouseEvent *, QWidget *w )
{
    CHECK_MAINWINDOW;
    switch ( currTool ) {
    case ORDER_TOOL:
	if ( !isMainContainer( w ) ) { // press on a child widget
	    orderedWidgets.clear();
	    orderedWidgets.append( w );
	    for ( QWidget *wid = orderedWidgets.last(); wid; wid = orderedWidgets.prev() ) {
		int i = stackedWidgets.findRef( wid );
		if ( i != -1 ) {
		    stackedWidgets.removeRef( wid );
		    stackedWidgets.insert( 0, wid );
		}
	    }
	    QWidgetList oldl = MetaDataBase::tabOrder( this );
	    TabOrderCommand *cmd = new TabOrderCommand( tr( "Change Tab Order" ), this, oldl, stackedWidgets );
	    cmd->execute();
	    commandHistory()->addCommand( cmd, TRUE );
	    updateOrderIndicators();
	}
    default:
	if ( !WidgetFactory::isPassiveInteractor( w ) &&
	     ( isMainContainer( w ) || w == this ) )
	    mainWindow()->editSource();
	break;
    }
}

void FormWindow::handleMouseMove( QMouseEvent *e, QWidget *w )
{
    CHECK_MAINWINDOW;
    if ( ( e->state() & LeftButton ) != LeftButton )
	return;

    QWidget *newendWidget = endWidget, *oldendWidget = endWidget, *wid;
    bool drawRecRect;
    switch ( currTool ) {
    case POINTER_TOOL:
	if ( widgetPressed && allowMove( w ) ) { // we are prepated for a move

	    // if widget is laid out, find the first non-laid out super-widget
	    while ( w->parentWidget() &&
		    ( WidgetFactory::layoutType( w->parentWidget() ) != WidgetFactory::NoLayout || !insertedWidgets.find(w ) ) )
		w = w->parentWidget();

	    // calc correct position
	    QPoint pos = w->mapFromGlobal( e->globalPos() );

#if 0
	    QPoint mpos = w->mapToParent( pos );
	    // check if we are not outside the visible area, else correct coords
	    if ( mpos.x() < 0 )
		pos.setX( w->mapFromParent( QPoint( 0, mpos.y() ) ).x() );
	    if ( mpos.y() < 0 )
		pos.setY( w->mapFromParent( QPoint( mpos.x(), 0 ) ).y() );
	    if ( mpos.x() > w->parentWidget()->width() )
		pos.setX( w->mapFromParent( QPoint( w->parentWidget()->width(), mpos.y() ) ).x() );
	    if ( mpos.y() > w->parentWidget()->height() )
		pos.setY( w->mapFromParent( QPoint( mpos.x(), w->parentWidget()->height() ) ).y() );
#endif

	    // calc move distance and store it
	    QPoint d = oldPressPos - pos;
	    if ( QABS( d.x() ) < grid().x() )
		d.setX( 0 );
	    if ( QABS( d.y() ) < grid().y() )
		d.setY( 0 );
	    if ( d.x() == 0 )
		pos.setX( oldPressPos.x() );
	    if ( d.y() == 0 )
		pos.setY( oldPressPos.y() );
	    oldPressPos = pos;

	    // snap to grid
	    int x = widgetGeom.x() - d.x();
	    widgetGeom.setX( x );
	    x = ( x / grid().x() ) * grid().x();
	    int y = widgetGeom.y() - d.y();
	    widgetGeom.setY( y );
	    y = ( y / grid().y() ) * grid().y();
	    QPoint p = w->pos();

	    if ( x - p.x() != 0 || y - p.y() != 0 ) { // if we actually have to move
		if ( !checkedSelectionsForMove ) { // if not checked yet, check if the correct widget are selected...
		    if ( !isWidgetSelected( w ) ) {	// and unselect others. Only siblings can be moved at the same time
			setPropertyShowingBlocked( TRUE );
			selectWidget( w );
			setPropertyShowingBlocked( FALSE );
		    }
		    checkSelectionsForMove( w );
		}

		// check whether we would have to reparent the selection and highlight the possible new parent container
		QMapConstIterator<QWidget*, QPoint> it = moving.begin();
		QWidget* wa = containerAt( e->globalPos(), it.key() );
		if ( wa  && !isMainContainer( wa ) && !isCentralWidget( wa ) ) {
		    wa = WidgetFactory::containerOfWidget( wa );
		    // ok, looks like we moved onto a container

		    if ( wa != targetContainer ) {
			if ( targetContainer ) {
			    if ( hadOwnPalette )
				targetContainer->setPalette( restorePalette );
			    else
				targetContainer->unsetPalette();
			}
			targetContainer = wa;
			hadOwnPalette = wa->ownPalette();
			restorePalette = wa->palette();
			wa->setPaletteBackgroundColor( wa->colorGroup().midlight() );
		    }
		}
		else if ( targetContainer ) {
		    if( hadOwnPalette )
			targetContainer->setPalette( restorePalette );
		    else
			targetContainer->unsetPalette();
		    targetContainer = 0;
		}

		// finally move the selected widgets and show/update preview label
		moveSelectedWidgets( x - p.x(), y - p.y() );
		sizePreviewLabel->setText( tr( "%1/%2" ).arg( w->pos().x() ).arg( w->pos().y() ) );
		sizePreviewLabel->adjustSize();
		QRect lg( mapFromGlobal( e->globalPos() ) + QPoint( 16, 16 ), sizePreviewLabel->size() );
		checkPreviewGeometry( lg );
		sizePreviewLabel->setGeometry( lg );
		sizePreviewLabel->raise();
		sizePreviewLabel->show();
#if defined(Q_WS_WIN32)
		windowsRepaintWorkaroundTimer->start( 100, TRUE );
#endif
	    } else { // if we don't need to move, do some indication
		QRect lg( mapFromGlobal( e->globalPos() ) + QPoint( 16, 16 ), sizePreviewLabel->size() );
		checkPreviewGeometry( lg );
		sizePreviewLabel->move( lg.x(), lg.y() );
	    }

	    oldPressPos += ( p - w->pos() );
	} else if ( drawRubber ) { // draw rubber if we are in rubber-selection mode
	    continueRectDraw( mapFromGlobal( e->globalPos() ), e->globalPos(), this, Rubber );
	}
	break;
    case CONNECT_TOOL:
	restoreConnectionLine();
	wid = qApp->widgetAt( e->globalPos(), TRUE );
	if ( wid )
	    wid = designerWidget( wid );
	if ( wid && ( isMainContainer( wid ) || insertedWidgets.find( wid ) ) && wid->isVisibleTo( this ) )
	    newendWidget = wid;
	if ( ::qt_cast<QLayoutWidget*>(newendWidget) || ::qt_cast<Spacer*>(newendWidget) )
	    newendWidget = (QWidget*)endWidget;
	drawRecRect = newendWidget != endWidget;
	if ( newendWidget &&
	     ( isMainContainer( newendWidget ) || insertedWidgets.find( newendWidget ) ) && !isCentralWidget( newendWidget ) )
	    endWidget = newendWidget;
	mainWindow()->statusBar()->message( tr( "Connect '%1' to '%2'" ).arg( startWidget->name() ).
					    arg( endWidget->name() ) );
	currentPos = mapFromGlobal( e->globalPos() );
	qApp->processEvents();
	if ( drawRecRect )
	    restoreRect( QRect( mapToForm( ( (QWidget*)oldendWidget )->parentWidget(), ( (QWidget*)oldendWidget )->pos() ),
			 ( (QWidget*)oldendWidget )->size() ) );
	drawConnectionLine();
	break;
    case BUDDY_TOOL:
	if ( !validForBuddy )
	    break;
	restoreConnectionLine();
	wid = qApp->widgetAt( e->globalPos(), TRUE );
	if ( wid )
	    wid = designerWidget( wid );
	if ( wid && canBeBuddy( wid ) && wid->isVisibleTo( this ) )
	    newendWidget = wid;
	else
	    newendWidget = 0;
	if ( ::qt_cast<QLayoutWidget*>(newendWidget) || ::qt_cast<Spacer*>(newendWidget) )
	    newendWidget = (QWidget*)endWidget;
	drawRecRect = newendWidget != endWidget;
	if ( !newendWidget )
	    endWidget = newendWidget;
	else if ( insertedWidgets.find( newendWidget ) && !isCentralWidget( newendWidget ) )
	    endWidget = newendWidget;
	if ( endWidget )
	    mainWindow()->statusBar()->message( tr( "Set buddy '%1' to '%2'" ).arg( startWidget->name() ).
						arg( endWidget->name() ) );
	else
	    mainWindow()->statusBar()->message( tr( "Set buddy '%1' to ..." ).arg( startWidget->name() ) );
	currentPos = mapFromGlobal( e->globalPos() );
	qApp->processEvents();
	if ( drawRecRect && oldendWidget )
	    restoreRect( QRect( mapToForm( ( (QWidget*)oldendWidget )->parentWidget(), ( (QWidget*)oldendWidget )->pos() ),
			 ( (QWidget*)oldendWidget )->size() ) );
	drawConnectionLine();
	break;
    case ORDER_TOOL:
	break;
    default: // we are in an insert-widget tool
	if ( insertParent ) // draw insert rect
	    continueRectDraw( w->mapFromGlobal( e->globalPos() ), e->globalPos(), w, Insert );
	break;
    }
}

void FormWindow::handleMouseRelease( QMouseEvent *e, QWidget *w )
{
    CHECK_MAINWINDOW;
    if ( e->button() != LeftButton )
	return;

    switch ( currTool ) {
    case POINTER_TOOL:
	if ( widgetPressed && allowMove( w ) ) { // we moved the widget
	    sizePreviewLabel->hide();

	    if ( moving.isEmpty() || w->pos() == *moving.find(w) )
		break;

	    // restore targetContainer
	    if ( targetContainer ) {
		if( hadOwnPalette )
		    targetContainer->setPalette( restorePalette );
		else
		    targetContainer->unsetPalette();
	    }

	    // tell property editor to update
	    if ( propertyWidget && propertyWidget->isWidgetType() && !isMainContainer( propertyWidget ) )
		emitUpdateProperties( propertyWidget );

	    QMapConstIterator<QWidget*,QPoint> it = moving.begin();
	    QWidget *oldParent = it.key()->parentWidget();
	    QWidget *newParent = oldParent;
	    // check whether we have to reparent the selection
	    QWidget* wa = containerAt( e->globalPos(), it.key() );
	    if ( wa ) {
		wa = WidgetFactory::containerOfWidget( wa );
		// ok, looks like we moved onto a container

		// check whether we really have different parents.
		if ( wa == it.key()->parentWidget() )
		    goto make_move_command;

		// break layout if necessary
		if ( WidgetFactory::layoutType( wa ) != WidgetFactory::NoLayout ) {
		    if ( QMessageBox::information( mainWindow(), tr( "Inserting a Widget" ),
						   tr( "You tried to insert a widget into the "
						       "layout Container Widget '%1'.\n"
						       "This is not possible. "
						       "In order to insert the widget, the layout of '%1'\n"
						       "must first be broken.\n"
						       "Break the layout or cancel the operation?" ).
						   arg( wa->name() ).
						   arg( wa->name() ), tr( "&Break Layout" ), tr( "&Cancel" ) ) )
			goto make_move_command; // cancel
		    breakLayout( wa );
		}

		// doesn't need to be a command, the MoveCommand does reparenting too
		bool emitSelChanged = FALSE;
		for ( QMap<QWidget*, QPoint>::Iterator it = moving.begin(); it != moving.end(); ++it ) {
		    QWidget *i = it.key();
		    if ( !emitSelChanged && ::qt_cast<QButton*>(i) ) {
			if ( ::qt_cast<QButtonGroup*>(i->parentWidget()) || ::qt_cast<QButtonGroup*>(wa) )
			    emitSelChanged = TRUE;
			if ( !::qt_cast<QButtonGroup*>(wa) ) {
			    MetaDataBase::setPropertyChanged( i, "buttonGroupId", FALSE );
			    if ( ::qt_cast<QButtonGroup*>(i->parentWidget()) )
				( (QButtonGroup*)i->parentWidget() )->remove( (QButton*)i );
			}
		    }
		    QPoint pos = wa->mapFromGlobal( i->mapToGlobal( QPoint(0,0) ) );
		    i->reparent( wa, pos, TRUE );
		    raiseSelection( i );
		    raiseChildSelections( i );
		    widgetChanged( i );
		    mainWindow()->objectHierarchy()->widgetRemoved( i );
		    mainWindow()->objectHierarchy()->widgetInserted( i );
		}
		if ( emitSelChanged ) {
		    emit showProperties( wa );
		    emit showProperties( propertyWidget );
		}
		newParent = wa;
	    }

	make_move_command:
	    QWidgetList widgets; // collect the widgets and its old and new positions which have been moved
	    QValueList<QPoint> oldPos, newPos;
	    for ( it = moving.begin(); it != moving.end(); ++it ) {
		widgets.append( it.key() );
		oldPos.append( *it );
		newPos.append( it.key()->pos() );
	    }
	    // add move command, don't execute it, this is just a summary of the operations we did during the move-event handling
	    commandHistory()->addCommand( new MoveCommand( tr( "Move" ),
							   this, widgets,
							   oldPos, newPos, oldParent, newParent ) );
	} else if ( drawRubber ) { // we were drawing a rubber selection
	    endRectDraw(); // get rid of the rectangle
	    blockSignals( TRUE );
	    selectWidgets(); // select widgets which intersect the rect
	    blockSignals( FALSE );
	    emitSelectionChanged(); // inform about selection changes
	    if ( propertyWidget )
		emitShowProperties( propertyWidget );
	}
	break;
    case CONNECT_TOOL:
    case BUDDY_TOOL:
	restoreConnectionLine();
	if ( startWidget )
	    restoreRect( QRect( mapToForm( ( (QWidget*)startWidget )->parentWidget(),
					   ( (QWidget*)startWidget )->pos() ),
				((QWidget*)startWidget )->size() ) );
	if ( endWidget )
	    restoreRect( QRect( mapToForm( ( (QWidget*)endWidget )->parentWidget(),
					   ( (QWidget*)endWidget )->pos() ),
				( (QWidget*)endWidget )->size() ) );
	endUnclippedPainter();
	qApp->processEvents();

	if ( startWidget && endWidget ) {
	    if ( currTool == CONNECT_TOOL )
		editConnections();
	    else if ( currTool == BUDDY_TOOL && validForBuddy && startWidget != endWidget ) {
		QString oldBuddy = startWidget->property( "buddy" ).toString();
		if ( oldBuddy.isNull() )
		    oldBuddy = "";
		SetPropertyCommand *cmd = new SetPropertyCommand( tr( "Set buddy for " + QString( startWidget->name() ) ),
								  this, startWidget, mainWindow()->propertyeditor(),
								  "buddy", startWidget->property( "buddy" ),
								  endWidget->name(), endWidget->name(),
								  oldBuddy );
		commandHistory()->addCommand( cmd, TRUE );
		cmd->execute();
		emitUpdateProperties( startWidget );
	    }
	}
	if ( !toolFixed )
	    mainwindow->resetTool();
	startWidget = endWidget = 0;
	mainWindow()->statusBar()->clear();
	break;
    case ORDER_TOOL:
	break;
    default: // any insert widget tool is active
	if ( insertParent ) { // we should insert the new widget now
	    endRectDraw();
	    if ( WidgetFactory::layoutType( insertParent ) != WidgetFactory::NoLayout ) {
		if ( QMessageBox::information( mainWindow(), tr( "Inserting a Widget" ),
					       tr( "You tried to insert a widget into the "
						   "layout Container Widget '%1'.\n"
						   "This is not possible. "
						   "In order to insert the widget, the layout of '%1'\n"
						   "must first be broken.\n"
						   "Break the layout or cancel the operation?" ).
					       arg( insertParent->name() ).
					       arg( insertParent->name() ), tr( "&Break Layout" ), tr( "&Cancel" ) ) == 0 ) {
		    breakLayout( insertParent );
		} else {
		    if ( !toolFixed )
			mainWindow()->resetTool();
		    break;
		}
	    }
	    insertWidget(); // so do it
	}
	break;
    }
    widgetPressed = FALSE;
    drawRubber = FALSE;
    insertParent = 0;
    delete buffer;
    buffer = 0;
}

void FormWindow::handleKeyPress( QKeyEvent *e, QWidget *w )
{
    CHECK_MAINWINDOW;
    e->ignore();
    checkSelectionsTimer->stop();
    if ( !checkedSelectionsForMove &&
	 ( e->key() == Key_Left ||
	   e->key() == Key_Right ||
	   e->key() == Key_Up ||
	   e->key() == Key_Down ) &&
	 propertyWidget->isWidgetType() )
	checkSelectionsForMove( (QWidget*)propertyWidget );
    checkSelectionsTimer->start( 1000, TRUE );
    if ( e->key() == Key_Left || e->key() == Key_Right ||
	 e->key() == Key_Up || e->key() == Key_Down ) {
	QWidgetList widgets;
	QValueList<QPoint> oldPos, newPos;
	for ( WidgetSelection *s = selections.first(); s; s = selections.next() ) {
	    if ( s->isUsed() ) {
		int dx = 0, dy = 0;
		bool control = e->state() & ControlButton;

		switch ( e->key() ) {
		case Key_Left: {
		    e->accept();
		    if ( control )
			dx = -1;
		    else
			dx = -grid().x();
		} break;
		case Key_Right: {
		    e->accept();
		    if ( control )
			dx = 1;
		    else
			dx = grid().x();
		} break;
		case Key_Up: {
		    e->accept();
		    if ( control )
			dy = -1;
		    else
			dy = -grid().y();
		} break;
		case Key_Down: {
		    e->accept();
		    if ( control )
			dy = 1;
		    else
			dy = grid().y();
		} break;
		default:
		    break;
		}

		widgets.append( s->widget() );
		oldPos.append( s->widget()->pos() );
		newPos.append( s->widget()->pos() + QPoint( dx, dy ) );
	    }
	}
	if ( !widgets.isEmpty() ) {
	    MoveCommand *cmd = new MoveCommand( tr( "Move" ), this,
						widgets, oldPos, newPos, 0, 0 );
	    commandHistory()->addCommand( cmd, TRUE );
	    cmd->execute();
	}
    }
    if ( !e->isAccepted() ) {
	QObjectList *l = queryList( "QWidget" );
	if ( !l )
	    return;
	if ( l->find( w ) != -1 )
	    e->accept();
	delete l;
    }

}

void FormWindow::handleKeyRelease( QKeyEvent *e, QWidget * )
{
    e->ignore();
}

void FormWindow::selectWidget( QObject *o, bool select )
{
    CHECK_MAINWINDOW;
    if ( !o->isWidgetType() ) {
	// ########### do QObject stuff
	return;
    }

    QWidget *w = (QWidget*)o;

    if ( isMainContainer( w ) ) {
	QObject *opw = propertyWidget;
	propertyWidget = mainContainer();
	if ( opw->isWidgetType() )
	    repaintSelection( (QWidget*)opw );
	emitShowProperties( propertyWidget );
	return;
    }

    if ( ::qt_cast<QMainWindow*>(mainContainer()) && w == ( (QMainWindow*)mainContainer() )->centralWidget() ) {
	QObject *opw = propertyWidget;
	propertyWidget = mainContainer();
	if ( opw->isWidgetType() )
	    repaintSelection( (QWidget*)opw );
	emitShowProperties( propertyWidget );
	return;
    }

    if ( ::qt_cast<QDesignerToolBar*>(o) )
	return;

    if ( select ) {
	QObject *opw = propertyWidget;
	propertyWidget = w;
	if ( opw->isWidgetType() )
	    repaintSelection( (QWidget*)opw );
	if ( !isPropertyShowingBlocked() )
	    emitShowProperties( propertyWidget );
	WidgetSelection *s = usedSelections.find( w );
	if ( s ) {
	    s->show();
	    return;
	}

	for ( WidgetSelection *s2 = selections.first(); s2; s2 = selections.next() ) {
	    if ( !s2->isUsed() ) {
		s = s2;
	    }
	}

	if ( !s ) {
	    s = new WidgetSelection( this, &usedSelections );
	    selections.append( s );
	}

	s->setWidget( w );
	emitSelectionChanged();
    } else {
	WidgetSelection *s = usedSelections.find( w );
	if ( s )
	    s->setWidget( 0 );
	QObject *opw = propertyWidget;
	if ( !usedSelections.isEmpty() )
	    propertyWidget = QPtrDictIterator<WidgetSelection>( usedSelections ).current()->widget();
	else
	    propertyWidget = mainContainer();
	if ( opw->isWidgetType() )
	    repaintSelection( (QWidget*)opw );
	if ( !isPropertyShowingBlocked() )
	    emitShowProperties( propertyWidget );
	emitSelectionChanged();
    }
}

QPoint FormWindow::grid() const
{
    if ( !mainWindow() || !mainWindow()->snapGrid() )
	return QPoint( 1, 1 );
    return mainWindow()->grid();
}

void FormWindow::updateSelection( QWidget *w )
{
    WidgetSelection *s = usedSelections.find( w );
    if ( !w->isVisibleTo( this ) )
	selectWidget( w, FALSE );
    else if ( s )
	s->updateGeometry();
}

void FormWindow::raiseSelection( QWidget *w )
{
    WidgetSelection *s = usedSelections.find( w );
    if ( s )
	s->show();
}

void FormWindow::repaintSelection( QWidget *w )
{
    WidgetSelection *s = usedSelections.find( w );
    if ( s )
	s->update();
}

void FormWindow::clearSelection( bool changePropertyDisplay )
{
    QPtrDictIterator<WidgetSelection> it( usedSelections );
    for ( ; it.current(); ++it )
	it.current()->setWidget( 0, FALSE );

    usedSelections.clear();
    if ( changePropertyDisplay ) {
	QObject *opw = propertyWidget;
	propertyWidget = mainContainer();
	if ( opw->isWidgetType() )
	    repaintSelection( (QWidget*)opw );
	emitShowProperties( propertyWidget );
    }
    emitSelectionChanged();
}

void FormWindow::startRectDraw( const QPoint &p, const QPoint &global, QWidget *, RectType t )
{
    QPoint pos( p );
    pos = mapFromGlobal( global );
    oldRectValid = FALSE;
    beginUnclippedPainter( TRUE );
    if ( t == Rubber )
	unclippedPainter->setPen( QPen( color0, 1 ) );
    if ( t == Insert )
	rectAnchor = gridPoint( pos );
    else if ( t == Rubber )
	rectAnchor = pos;
    currRect = QRect( rectAnchor, QPoint( 0, 0 ) );
    if ( t == Insert )
	drawSizePreview( pos, tr("Use Size Hint") );
}

void FormWindow::continueRectDraw( const QPoint &p, const QPoint &global, QWidget *, RectType t )
{
    QPoint pos =p;
    pos = mapFromGlobal( global );
    QPoint p2;
    if ( t == Insert )
	p2 = gridPoint( pos );
    else if ( t == Rubber )
	p2 = pos;
    QRect r( rectAnchor, p2 );
    r = r.normalize();

    if ( currRect == r ) {
	QString t = tr( "%1/%2" );
	t = t.arg( r.width() - 1 ).arg( r.height() - 1 );
	drawSizePreview( pos, t );
	return;
    }

    if ( oldRectValid )
	unclippedPainter->drawRect( currRect );
    if ( r.width() > 1 || r.height() > 1 ) {
	oldRectValid = TRUE;
	currRect = r;
	if ( t == Insert ) {
	    QString t = tr( "%1/%2" );
	    t = t.arg( r.width() - 1 ).arg( r.height() - 1 );
	    drawSizePreview( pos, t );
	}
	unclippedPainter->setClipRegion( QRegion( rect() ).subtract( QRect( sizePreviewPos, sizePreviewPixmap.size() ) ) );
	unclippedPainter->drawRect( currRect );
	unclippedPainter->setClipping( FALSE );
    } else {
	oldRectValid = FALSE;
	if ( t == Insert )
	    drawSizePreview( pos, tr("Use Size Hint") );
    }
}

void FormWindow::endRectDraw()
{
    if ( !unclippedPainter )
	return;

    if ( oldRectValid )
	unclippedPainter->drawRect( currRect );
    drawSizePreview( QPoint(-1,-1), QString::null );
    endUnclippedPainter();
}

void FormWindow::selectWidgets()
{
    QObjectList *l = mainContainer()->queryList( "QWidget" );
    if ( l ) {
	for ( QObject *o = l->first(); o; o = l->next() ) {
	    if ( ( (QWidget*)o )->isVisibleTo( this ) &&
		 insertedWidgets[ (void*)o ] ) {
		QPoint p = ( (QWidget*)o )->mapToGlobal( QPoint(0,0) );
		p = mapFromGlobal( p );
		QRect r( p, ( (QWidget*)o )->size() );
		if ( r.intersects( currRect ) && !r.contains( currRect ) )
		    selectWidget( (QWidget*)o );
	    }
	}
	delete l;
    }
    emitSelectionChanged();
}

bool FormWindow::isWidgetSelected( QObject *w )
{
    if ( w->isWidgetType() )
	return usedSelections.find( (QWidget*)w ) != 0;
    return FALSE; // #### do stuff for QObjects
}

void FormWindow::moveSelectedWidgets( int dx, int dy )
{
    QPtrDictIterator<WidgetSelection> it( usedSelections );
    for ( ; it.current(); ++it ) {
	WidgetSelection *s = it.current();
	QWidget *w = s->widget();
	if ( w->parentWidget() && WidgetFactory::layoutType( w->parentWidget() ) != WidgetFactory::NoLayout )
	    continue;
	w->move( w->x() + dx, w->y() + dy );
	s->updateGeometry();
	updateChildSelections( w );
    }
}

CommandHistory *FormWindow::commandHistory()
{
    return &commands;
}

void FormWindow::undo()
{
    commandHistory()->undo();
}

void FormWindow::redo()
{
    commandHistory()->redo();
}

void FormWindow::raiseChildSelections( QWidget *w )
{
    QObjectList *l = w->queryList( "QWidget" );
    if ( !l || !l->first() ) {
	delete l;
	return;
    }

    QPtrDictIterator<WidgetSelection> it( usedSelections );
    for ( ; it.current(); ++it ) {
	if ( l->findRef( it.current()->widget() ) != -1 )
	    it.current()->show();
    }
    delete l;
}

void FormWindow::updateChildSelections( QWidget *w )
{
    QObjectList *l = w->queryList( "QWidget" );
    if ( l ) {
	for ( QObject *o = l->first(); o; o = l->next() ) {
	    if ( o->isWidgetType() &&
		 insertedWidgets.find( (QWidget*)o ) )
		updateSelection( (QWidget*)o );
	}
	delete l;
    }
}

void FormWindow::checkSelectionsForMove( QWidget *w )
{
    checkedSelectionsForMove = TRUE;

    QObjectList *l = w->parentWidget()->queryList( "QWidget", 0, FALSE, FALSE );
    moving.clear();
    if ( l ) {
	QPtrDictIterator<WidgetSelection> it( usedSelections );
	WidgetSelection *sel;
	while ( ( sel = it.current() ) != 0 ) {
	    if ( it.current()->widget() == mainContainer() )
		continue;
	    ++it;
	    if ( l->find( sel->widget() ) == -1 ) {
		if ( WidgetFactory::layoutType( w ) == WidgetFactory::NoLayout )
		    sel->setWidget( 0 );
	    } else {
		if ( WidgetFactory::layoutType( sel->widget()->parentWidget() ) == WidgetFactory::NoLayout ) {
		    moving.insert( sel->widget(), sel->widget()->pos() );
		    sel->widget()->raise();
		    raiseChildSelections( sel->widget() );
		    raiseSelection( sel->widget() );
		}
	    }
	}
	delete l;
    }
}

void FormWindow::deleteWidgets()
{
    CHECK_MAINWINDOW;
    QWidgetList widgets;
    QPtrDictIterator<WidgetSelection> it( usedSelections );
    for ( ; it.current(); ++it ) {
	QWidget *tb = 0;
	if ( !( tb = mainWindow()->isAToolBarChild( it.current()->widget() ) ) )
	     widgets.append( it.current()->widget() );
	else
	    ( (QDesignerToolBar*)tb )->removeWidget( it.current()->widget() );
    }

    if ( widgets.isEmpty() )
	return;

    DeleteCommand *cmd = new DeleteCommand( tr( "Delete" ), this, widgets );
    commandHistory()->addCommand( cmd );
    cmd->execute();
}

void FormWindow::editAdjustSize()
{
    QPtrList<Command> commands;
    QWidgetList widgets = selectedWidgets();
    if ( widgets.isEmpty() ) {
	QRect oldr = geometry();
	mainContainer()->adjustSize();
	resize( mainContainer()->size() );
	// check whether our own size constraint hit us
	if ( size() != mainContainer()->size() )
	    mainContainer()->resize( size() );
	QRect nr = geometry();
	if ( oldr != nr ) {
	    ResizeCommand *cmd = new ResizeCommand( tr( "Adjust Size" ), this, this, oldr, nr );
	    commandHistory()->addCommand( cmd );
	}
	return;
    }
    for ( QWidget* w = widgets.first(); w; w = widgets.next() ) {
	if ( w->parentWidget() && WidgetFactory::layoutType( w->parentWidget() ) != WidgetFactory::NoLayout )
	    continue;
	QRect oldr = w->geometry();
	w->adjustSize();
	QRect nr = w->geometry();
	if ( oldr != nr )
	    commands.append( new ResizeCommand( tr("Adjust Size"), this, w, oldr, nr ) );
    }

    if ( commands.isEmpty() )
	return;
    for ( WidgetSelection *s = selections.first(); s; s = selections.next() )
	s->updateGeometry();

    MacroCommand *cmd = new MacroCommand( tr( "Adjust Size" ), this, commands );
    commandHistory()->addCommand( cmd );
}


QWidgetList FormWindow::selectedWidgets() const
{
    QWidgetList widgets;
    QPtrDictIterator<WidgetSelection> it( usedSelections );
    for ( ; it.current(); ++it )
	widgets.append( it.current()->widget() );
    return widgets;
}

void FormWindow::widgetChanged( QObject *w )
{
    if ( w->isWidgetType() )
	updateSelection( (QWidget*)w );
    // ########## do QObject stuff
}

QLabel *FormWindow::sizePreview() const
{
    if ( !sizePreviewLabel ) {
	( (FormWindow*)this )->sizePreviewLabel = new QLabel( (FormWindow*)this );
	( (FormWindow*)this )->sizePreviewLabel->hide();
	( (FormWindow*)this )->sizePreviewLabel->setBackgroundColor( QColor( 255, 255, 128 ) );
	( (FormWindow*)this )->sizePreviewLabel->setFrameStyle( QFrame::Plain | QFrame::Box );
    }
    return sizePreviewLabel;
}

void FormWindow::invalidCheckedSelections()
{
    checkedSelectionsForMove = FALSE;
}

void FormWindow::checkPreviewGeometry( QRect &r )
{
    if ( !rect().contains( r ) ) {
	if ( r.left() < rect().left() )
	    r.moveTopLeft( QPoint( 0, r.top() ) );
	if ( r.right() > rect().right()  )
	    r.moveBottomRight( QPoint( rect().right(), r.bottom() ) );
	if ( r.top() < rect().top() )
	    r.moveTopLeft( QPoint( r.left(), rect().top() ) );
	if ( r.bottom() > rect().bottom()  )
	    r.moveBottomRight( QPoint( r.right(), rect().bottom() ) );
    }
}

void FormWindow::focusInEvent( QFocusEvent * ){

    if (ff)
	ff->checkTimeStamp();
}

void FormWindow::focusOutEvent( QFocusEvent * )
{
    if ( propertyWidget && !isMainContainer( propertyWidget ) && !isWidgetSelected( propertyWidget ) ) {
	QObject *opw = propertyWidget;
	propertyWidget = mainContainer();
	if ( opw->isWidgetType() )
	    repaintSelection( (QWidget*)opw );
    }
}

void FormWindow::resizeEvent( QResizeEvent *e )
{
    QWidget::resizeEvent( e );
    if ( currTool == ORDER_TOOL )
	repositionOrderIndicators();
    if ( isVisible() )
	formFile()->setModified( TRUE, FormFile::WFormWindow );

#if defined(Q_WS_WIN32)
    windowsRepaintWorkaroundTimer->start( 100, TRUE );
#endif
}

void FormWindow::windowsRepaintWorkaroundTimerTimeout()
{
#if defined(Q_WS_WIN32)
    QObjectList *l = queryList( "QWidget" );
    for ( QObject *o = l->first(); o; o = l->next() ) {
	flickerfree_update( (QWidget*)o );
    }
    flickerfree_update( this );
    delete l;
#endif
}

QPtrDict<QWidget> *FormWindow::widgets()
{
    return &insertedWidgets;
}

QWidget *FormWindow::designerWidget( QObject *o ) const
{
    if ( !o || !o->isWidgetType() )
	return 0;
    QWidget *w = (QWidget*)o;
    while ( w && !isMainContainer( w ) && !insertedWidgets[ (void*)w ] || isCentralWidget( w ) )
	w = (QWidget*)w->parent();
    return w;
}

void FormWindow::emitShowProperties( QObject *w )
{
    if ( w ) {
	QObject *opw = propertyWidget;
	propertyWidget = w;
	if ( opw->isWidgetType() )
	    repaintSelection( (QWidget*)opw );
    }
    showPropertiesTimer->stop();
    showPropertiesTimer->start( 0, TRUE );
}

void FormWindow::emitUpdateProperties( QObject *w )
{
    if ( w == propertyWidget ) {
	updatePropertiesTimer->stop();
	updatePropertiesTimer->start( 0, TRUE );
    }
}

void FormWindow::emitSelectionChanged()
{
    selectionChangedTimer->stop();
    selectionChangedTimer->start( 0, TRUE );
}

void FormWindow::updatePropertiesTimerDone()
{
    CHECK_MAINWINDOW;
    if ( propertyWidget && mainWindow()->formWindow() == this )
	emit updateProperties( propertyWidget );
}

void FormWindow::showPropertiesTimerDone()
{
    CHECK_MAINWINDOW;
    if ( propertyWidget && mainWindow()->formWindow() == this )
	emit showProperties( propertyWidget );
}

void FormWindow::selectionChangedTimerDone()
{
    emit selectionChanged();
}

void FormWindow::currentToolChanged()
{
    CHECK_MAINWINDOW;
    toolFixed = FALSE;
    int t = mainwindow->currentTool();
    if ( currTool == t && t != ORDER_TOOL )
	return;

    // tool cleanup
    switch ( currTool ) {
    case ORDER_TOOL:
	hideOrderIndicators();
	break;
    case CONNECT_TOOL:
    case BUDDY_TOOL:
	restoreConnectionLine();
	if ( startWidget )
	    restoreRect( QRect( mapToForm( ( (QWidget*)startWidget )->parentWidget(),
					   ( (QWidget*)startWidget )->pos() ),
				( (QWidget*)startWidget )->size() ) );
	if ( endWidget )
	    restoreRect( QRect( mapToForm( ( (QWidget*)endWidget )->parentWidget(),
					   ( (QWidget*)endWidget )->pos() ),
				( (QWidget*)endWidget )->size() ) );
	endUnclippedPainter();
	break;
    case POINTER_TOOL:
	break;
    default:
	if ( insertParent )
	    endRectDraw();
	break;
    }

    startWidget = endWidget = 0;
    widgetPressed = FALSE;
    drawRubber = FALSE;
    insertParent = 0;
    delete buffer;
    buffer = 0;

    currTool = t;

    if ( hasFocus() )
	clearSelection( FALSE );

    mainWindow()->statusBar()->clear();

    // tool setup
    switch ( currTool ) {
    case POINTER_TOOL:
	if ( propertyWidget && !isMainContainer( propertyWidget ) && !isWidgetSelected( propertyWidget ) )
	    emitShowProperties( mainContainer() );
	restoreCursors( this, this );
	break;
    case ORDER_TOOL:
	if ( mainWindow()->formWindow() == this ) {
	    mainWindow()->statusBar()->message( tr( "Click widgets to change the tab order...") );
	    orderedWidgets.clear();
	    showOrderIndicators();
	    if ( mainWindow()->formWindow() == this )
		emitShowProperties( mainContainer() );
	    setCursorToAll( ArrowCursor, this );
	}
	break;
    case CONNECT_TOOL:
    case BUDDY_TOOL:
	if ( currTool == CONNECT_TOOL )
	    mainWindow()->statusBar()->message( tr( "Drag a line to create a connection...") );
	else
	    mainWindow()->statusBar()->message( tr( "Drag a line to set a buddy...") );
	setCursorToAll( CrossCursor, this );
	if ( mainWindow()->formWindow() == this )
	    emitShowProperties( mainContainer() );
	break;
    default:
	mainWindow()->statusBar()->message( tr( "Click on the form to insert a %1..." ).arg( WidgetDatabase::toolTip( currTool ).lower() ) );
	setCursorToAll( CrossCursor, this );
	if ( mainWindow()->formWindow() == this )
	    emitShowProperties( mainContainer() );
	break;
    }
}

void FormWindow::showOrderIndicators()
{
    hideOrderIndicators();
    orderIndicators.setAutoDelete( TRUE );
    QObjectList *l = mainContainer()->queryList( "QWidget" );
    stackedWidgets = MetaDataBase::tabOrder( this );
    if ( l ) {
	int order = 1;
	for ( QObject *o = l->first(); o; o = l->next() ) {
	    QWidget* w = (QWidget*) o;
	    if ( w->isShown() &&
		 insertedWidgets[ (void*)w ]  &&
		 w->focusPolicy() != NoFocus ) {
		OrderIndicator* ind = new OrderIndicator( order++, w, this );
		orderIndicators.append( ind );
		if ( stackedWidgets.findRef( w ) == -1 )
		    stackedWidgets.append( w );
	    }
	}
	delete l;
    }
    updateOrderIndicators();
}

void FormWindow::hideOrderIndicators()
{
    orderIndicators.clear();
}

void FormWindow::updateOrderIndicators()
{
    int order = 1;
    for ( QWidget *w = stackedWidgets.first(); w; w = stackedWidgets.next() ) {
	for ( OrderIndicator* i = orderIndicators.first(); i; i = orderIndicators.next() )
	    i->setOrder( order, w );
	order++;
    }
}

void FormWindow::repositionOrderIndicators()
{
    for ( OrderIndicator* i = orderIndicators.first(); i; i = orderIndicators.next() )
	i->reposition();
}


void FormWindow::updateUndoInfo()
{
    commandHistory()->emitUndoRedo();
}

bool FormWindow::checkCustomWidgets()
{
    QStringList missingCustomWidgets;
    QPtrDictIterator<QWidget> it( insertedWidgets );
    for ( ; it.current(); ++it ) {
	if ( it.current()->isA( "CustomWidget" ) ) {
	    QString className = WidgetFactory::classNameOf( it.current() );
	    if ( !MetaDataBase::hasCustomWidget( className ) )
		missingCustomWidgets << className;
	}
    }

    if ( !missingCustomWidgets.isEmpty() ) {
	QString txt = tr( "The following custom widgets are used in '%1',\n"
			  "but are not known to IndigoSCADA HMI Designer:\n" ).arg( name() );
	for ( QStringList::Iterator sit = missingCustomWidgets.begin(); sit != missingCustomWidgets.end(); ++sit )
	    txt += "   " + *sit + "\n";
	txt += "If you save this form and generate code for it using uic, \n"
	       "the generated code will not compile.\n"
	       "Do you want to save this form now?";
	if ( QMessageBox::information( mainWindow(), tr( "Save Form" ), txt ) == 1 )
	    return FALSE;
    }
    return TRUE;
}

void FormWindow::setPropertyShowingBlocked( bool b )
{
    propShowBlocked = b;
}

bool FormWindow::isPropertyShowingBlocked() const
{
    return propShowBlocked;
}

int FormWindow::numSelectedWidgets() const
{
    return usedSelections.count();
}

QString FormWindow::copy()
{
    CHECK_MAINWINDOW_VALUE( QString::null );
    Resource resource( mainWindow() );
    resource.setWidget( this );
    return resource.copy();
}

void FormWindow::lowerWidgets()
{
    QWidgetList widgets;
    QPtrDictIterator<WidgetSelection> it( usedSelections );
    for ( ; it.current(); ++it )
	widgets.append( it.current()->widget() );

    LowerCommand *cmd = new LowerCommand( tr( "Lower" ), this, widgets );
    cmd->execute();
    commandHistory()->addCommand( cmd );
}

void find_accel( const QString &txt, QMap<QChar, QWidgetList > &accels, QWidget *w )
{
    int i = txt.find( "&" );
    if ( i == -1 )
	return;
    QChar c = txt[ i + 1 ];
    if ( c.isNull() || c == '&' )
	return;
    c = c.lower();
    QMap<QChar, QWidgetList >::Iterator it = accels.find( c );
    if ( it == accels.end() ) {
	QWidgetList wl;
	wl.append( w );
	accels.insert( c, wl );
    } else {
	QWidgetList *wl = &*it;
	wl->append( w );
    }
}

void FormWindow::checkAccels()
{
    CHECK_MAINWINDOW;
    QMap<QChar, QWidgetList > accels;
    QObjectList *l = mainContainer()->queryList( "QWidget" );
    if ( l ) {
	for ( QObject *o = l->first(); o; o = l->next() ) {
	    if ( ( (QWidget*)o )->isVisibleTo( this ) &&
		 insertedWidgets[ (void*)o ] ) {
		QWidget *w = (QWidget*)o;
		const QMetaProperty* text =
		    w->metaObject()->property( w->metaObject()->findProperty( "text", TRUE ), TRUE );
		const QMetaProperty* title =
		    w->metaObject()->property( w->metaObject()->findProperty( "title", TRUE ), TRUE );
		const QMetaProperty* pageTitle =
		    w->metaObject()->property( w->metaObject()->findProperty( "pageTitle", TRUE ), TRUE );
		if ( text )
		    find_accel( w->property( "text" ).toString(), accels, w );
		if ( title )
		    find_accel( w->property( "title" ).toString(), accels, w );
		if ( pageTitle )
		    find_accel( w->property( "pageTitle" ).toString(), accels, w );
	    } else if ( ::qt_cast<MenuBarEditor*>(o) ) {
		((MenuBarEditor *)o)->checkAccels( accels );
	    }
	}
	delete l;
    }

    bool ok = TRUE;
    QWidget *wid;
    for ( QMap<QChar, QWidgetList >::Iterator it = accels.begin(); it != accels.end(); ++it ) {
	if ( (*it).count() > 1 ) {
	    ok = FALSE;
	    switch ( QMessageBox::information( mainWindow(), tr( "Check Accelerators" ),
					       tr( "Accelerator '%1' is used %2 times."
						   ).arg( it.key().upper() ).arg( (*it).count() ),
					       tr( "&Select" ),
					       tr( "&Cancel" ), QString::null, 2 ) ) {
	    case 0: // select
		clearSelection( FALSE );
		for ( wid = (*it).first(); wid; wid = (*it).next() )
		    selectWidget( wid, TRUE );
		return;
	    case 1: // cancel
		return;
	    }
	}
    }

    if ( ok )
	QMessageBox::information( mainWindow(), tr( "Check Accelerators" ),
				  tr( "No accelerator is used more than once." ) );
}

void FormWindow::raiseWidgets()
{
    QWidgetList widgets;
    QPtrDictIterator<WidgetSelection> it( usedSelections );
    for ( ; it.current(); ++it )
	widgets.append( it.current()->widget() );

    RaiseCommand *cmd = new RaiseCommand( tr( "Raise" ), this, widgets );
    cmd->execute();
    commandHistory()->addCommand( cmd );
}

void FormWindow::paste( const QString &cb, QWidget *parent )
{
    CHECK_MAINWINDOW;
    Resource resource( mainWindow() );
    resource.setWidget( this );
    resource.paste( cb, parent );
}

void FormWindow::selectAll()
{
    checkedSelectionsForMove = FALSE;
    blockSignals( TRUE );
    QObjectList *l = mainContainer()->queryList( "QWidget" );
    if ( l ) {
	for ( QObject *o = l->first(); o; o = l->next() ) {
	    if ( ( (QWidget*)o )->isVisibleTo( this ) &&
		 insertedWidgets[ (void*)o ] ) {
		selectWidget( (QWidget*)o );
	    }
	}
	delete l;
    }

    blockSignals( FALSE );
    emitSelectionChanged();
    if ( propertyWidget )
	emitShowProperties( propertyWidget );
    emitSelectionChanged();
}

void FormWindow::layoutHorizontal()
{
    QWidgetList widgets( selectedWidgets() );
    LayoutHorizontalCommand *cmd = new LayoutHorizontalCommand( tr( "Lay out horizontally" ),
								this, mainContainer(), 0, widgets );
    clearSelection( FALSE );
    commandHistory()->addCommand( cmd );
    cmd->execute();
}

void FormWindow::layoutVertical()
{
    QWidgetList widgets( selectedWidgets() );
    LayoutVerticalCommand *cmd = new LayoutVerticalCommand( tr( "Lay out vertically" ),
							    this, mainContainer(), 0, widgets );
    clearSelection( FALSE );
    commandHistory()->addCommand( cmd );
    cmd->execute();
}

void FormWindow::layoutHorizontalSplit()
{
    QWidgetList widgets( selectedWidgets() );
    LayoutHorizontalSplitCommand *cmd = new LayoutHorizontalSplitCommand( tr( "Lay out horizontally (in splitter)" ),
									  this, mainContainer(), 0, widgets );
    clearSelection( FALSE );
    commandHistory()->addCommand( cmd );
    cmd->execute();
}

void FormWindow::layoutVerticalSplit()
{
    QWidgetList widgets( selectedWidgets() );
    LayoutVerticalSplitCommand *cmd = new LayoutVerticalSplitCommand( tr( "Lay out vertically (in splitter)" ),
								      this, mainContainer(), 0, widgets );
    clearSelection( FALSE );
    commandHistory()->addCommand( cmd );
    cmd->execute();
}

void FormWindow::layoutGrid()
{
    int xres = grid().x();
    int yres = grid().y();

    QWidgetList widgets( selectedWidgets() );
    LayoutGridCommand *cmd = new LayoutGridCommand( tr( "Lay out in a grid" ),
						    this, mainContainer(), 0, widgets, xres, yres );
    clearSelection( FALSE );
    commandHistory()->addCommand( cmd );
    cmd->execute();
}

void FormWindow::layoutHorizontalContainer( QWidget *w )
{
    if ( w == this )
	w = mainContainer();
    QObjectList *l = (QObjectList*)WidgetFactory::containerOfWidget(w)->children();
    if ( !l )
	return;
    QWidgetList widgets;
    for ( QObject *o = l->first(); o; o = l->next() ) {
	if ( o->isWidgetType() &&
	     ( (QWidget*)o )->isVisibleTo( this ) &&
	     insertedWidgets.find( (QWidget*)o ) )
	    widgets.append( (QWidget*)o );
    }
    LayoutHorizontalCommand *cmd = new LayoutHorizontalCommand( tr( "Lay out children horizontally" ),
								this, mainContainer(), w, widgets );
    clearSelection( FALSE );
    commandHistory()->addCommand( cmd );
    cmd->execute();
}

void FormWindow::layoutVerticalContainer( QWidget *w )
{
    if ( w == this )
	w = mainContainer();
    QObjectList *l = (QObjectList*)WidgetFactory::containerOfWidget(w)->children();
    if ( !l )
	return;
    QWidgetList widgets;
    for ( QObject *o = l->first(); o; o = l->next() ) {
	if ( o->isWidgetType() &&
	     ( (QWidget*)o )->isVisibleTo( this ) &&
	     insertedWidgets.find( (QWidget*)o ) )
	    widgets.append( (QWidget*)o );
    }
    LayoutVerticalCommand *cmd = new LayoutVerticalCommand( tr( "Lay out children vertically" ),
							    this, mainContainer(), w, widgets );
    clearSelection( FALSE );
    commandHistory()->addCommand( cmd );
    cmd->execute();
}

void FormWindow::layoutGridContainer( QWidget *w )
{
    if ( w == this )
	w = mainContainer();
    int xres = grid().x();
    int yres = grid().y();

    QObjectList *l = (QObjectList*)WidgetFactory::containerOfWidget(w)->children();
    if ( !l )
	return;
    QWidgetList widgets;
    for ( QObject *o = l->first(); o; o = l->next() ) {
	if ( o->isWidgetType() &&
	     ( (QWidget*)o )->isVisibleTo( this ) &&
	     insertedWidgets.find( (QWidget*)o ) )
	    widgets.append( (QWidget*)o );
    }
    LayoutGridCommand *cmd = new LayoutGridCommand( tr( "Lay out children in a grid" ),
						    this, mainContainer(), w, widgets, xres, yres );
    clearSelection( FALSE );
    commandHistory()->addCommand( cmd );
    cmd->execute();
}

void FormWindow::breakLayout( QWidget *w )
{
    if ( w == this )
	w = mainContainer();
    w = WidgetFactory::containerOfWidget( w );
    QPtrList<Command> commands;

    for (;;) {
	if ( !w || w == this )
	    break;
	if ( WidgetFactory::layoutType( w ) != WidgetFactory::NoLayout &&
	     WidgetDatabase::isContainer( WidgetDatabase::idFromClassName( WidgetFactory::classNameOf( w ) ) ) ) {
	    Command *cmd = breakLayoutCommand( w );
	    if ( cmd )
		commands.insert( 0, cmd );
	    if ( !::qt_cast<QLayoutWidget*>(w) && !::qt_cast<QSplitter*>(w) )
		break;
	}
	w = w->parentWidget();
    }

    if ( commands.isEmpty() )
	return;

    clearSelection( FALSE );
    MacroCommand *cmd = new MacroCommand( tr( "Break Layout" ), this, commands );
    commandHistory()->addCommand( cmd );
    cmd->execute();
}

BreakLayoutCommand *FormWindow::breakLayoutCommand( QWidget *w )
{
    CHECK_MAINWINDOW_VALUE( 0 );
    QObjectList *l = (QObjectList*)w->children();
    if ( !l )
	return 0;

    QWidgetList widgets;
    for ( QObject *o = l->first(); o; o = l->next() ) {
	if ( o->isWidgetType() &&
	     !mainWindow()->isAToolBarChild( (QWidget*)o ) &&
	     ( (QWidget*)o )->isVisibleTo( this ) &&
	     insertedWidgets.find( (QWidget*)o ) )
	    widgets.append( (QWidget*)o );
    }
    return new BreakLayoutCommand( tr( "Break Layout" ), this, WidgetFactory::widgetOfContainer( w ), widgets );
}

int FormWindow::numVisibleWidgets() const
{
    QPtrDictIterator<QWidget> it( insertedWidgets );
    int visible = 0;
    for ( ; it.current(); ++it ) {
	if ( it.current()->isVisibleTo( (FormWindow*)this ) )
	    visible++;
    }
    return visible;
}

bool FormWindow::hasInsertedChildren( QWidget *w ) const
{
    if ( !w )
	return FALSE;
    w = WidgetFactory::containerOfWidget( w );
    if ( !w )
	return FALSE;
    QObjectList *l = w->queryList( "QWidget" );
    if ( !l || !l->first() ) {
	delete l;
	return FALSE;
    }

    for ( QObject *o = l->first(); o; o = l->next() ) {
	if ( o->isWidgetType() &&
	     ( (QWidget*)o )->isVisibleTo( (FormWindow*)this ) &&
	     insertedWidgets.find( (QWidget*)o ) ) {
	    delete l;
	    return TRUE;
	}
    }

    delete l;
    return FALSE;
}

bool FormWindow::allowMove( QWidget *w )
{
    w = w->parentWidget();
    while ( w ) {
	if ( ( isMainContainer( w ) || insertedWidgets.find( w ) ) && WidgetFactory::layoutType( w ) == WidgetFactory::NoLayout )
	    return TRUE;
	w = w->parentWidget();
    }
    return FALSE;
}


void FormWindow::editConnections()
{
    CHECK_MAINWINDOW;
    buffer = 0;
    if ( !startWidget || !endWidget )
	return;

    ConnectionDialog dlg( mainwindow );
    mainWindow()->statusBar()->message( tr( "Edit connections...") );
    dlg.addConnection( startWidget, endWidget, QString::null, QString::null );
    QTimer::singleShot( 0, &dlg, SLOT(ensureConnectionVisible()) );
    dlg.exec();
}

void FormWindow::saveBackground()
{
    if ( buffer )
	delete buffer;
    buffer = new QPixmap( width(), height() );
    *buffer = QPixmap::grabWindow( winId() );
}

void FormWindow::restoreConnectionLine()
{
    if (!unclippedPainter || !buffer) // designer will occasionally crash if buffer is not tested to be non-zero
	return;

    int a =QABS( startPos.x() - currentPos.x() );
    int b = QABS( startPos.y() - currentPos.y() );
    QRect r( startPos, currentPos );

    if ( a < 32 || b < 32 ) { // special case: vertical or horizontal line
	r = r.normalize();
	unclippedPainter->drawPixmap( r.x() - 2, r.y() - 2, *buffer,
				      r.x() - 2, r.y() - 2, r.width() + 4, r.height() + 4 );
	return;
    }

    if ( a <= 0 )
	a = 1;
    if ( b <= 0 )
	b = 1;
    int w, h;
    if ( b > a ) {
	h = 64;
	w = ( a * h ) / b;
    } else {
	w = 64;
	h = ( b * w ) / a;
    }

    int dx = 2 * w / 3;
    int dy = 2 * h / 3;
    QPoint p( startPos );

    if ( r.x() > r.right() ) {
	dx = dx * -1;
	p.setX( p.x() - 64 );
	r.moveBy( -64, 0 );
    }
    if ( r.y() > r.bottom() ) {
	dy = dy * -1;
	p.setY( p.y() - 64 );
	r.moveBy( 0, -64 );
    }

    w = h = 64;
    r = r.normalize();
    while ( r.contains( p ) ) {
	unclippedPainter->drawPixmap( p, *buffer, QRect( p, QSize( w, h ) ) );
	unclippedPainter->setPen( red );
	p.setX( p.x() + dx );
	p.setY( p.y() + dy );
    }

    unclippedPainter->drawPixmap( startPos.x() - 10, startPos.y() - 10, *buffer,
				  startPos.x() - 10, startPos.y() - 10, 20, 20 );
}

void FormWindow::restoreRect( const QRect &rect )
{
    if (!unclippedPainter || !buffer)
	return;

    QRect r( rect );
    r = r.normalize();

    r = QRect( r.x() + 2, r.y() + 2, r.width() - 4, r.height() - 4 );

    unclippedPainter->drawPixmap( r.x() - 2, r.y() - 2, *buffer, r.x() - 2, r.y() - 2, r.width() + 4, 4 );
    unclippedPainter->drawPixmap( r.x() - 2, r.y() - 2, *buffer, r.x() - 2, r.y() - 2, 4, r.height() + 4 );
    unclippedPainter->drawPixmap( r.x() - 2, r.y() + r.height() - 3, *buffer, r.x() - 2, r.y() + r.height() - 3, r.width() + 4, 5 );
    unclippedPainter->drawPixmap( r.x() + r.width() - 2, r.y(), *buffer, r.x() + r.width() - 2, r.y(), 4, r.height() + 4 );
}

void FormWindow::drawConnectionLine()
{
    if ( !unclippedPainter )
	return;

    unclippedPainter->setPen( QPen( white, 2 ) );
    unclippedPainter->drawLine( startPos, currentPos );
    if ( validForBuddy )
	unclippedPainter->setPen( QPen( darkRed, 1 ) );
    else
	unclippedPainter->setPen( QPen( darkCyan, 1 ) );
    unclippedPainter->drawLine( startPos, currentPos );

    if ( validForBuddy )
	unclippedPainter->setPen( QPen( darkGreen, 1 ) );
    else
	unclippedPainter->setPen( QPen( magenta, 1 ) );
    if ( startWidget ) {
	QWidget *s = (QWidget*)startWidget;
	QPoint p = mapToForm( s, QPoint(0,0) );
	unclippedPainter->drawRect( QRect( p + QPoint( 2, 2 ), s->size() - QSize( 4, 4 ) ) );
     }
    if ( endWidget ) {
	QWidget *e = (QWidget*)endWidget;
	QPoint p = mapToForm( e, QPoint(0,0) );
	unclippedPainter->drawRect( QRect( p + QPoint( 2, 2 ), e->size() - QSize( 4, 4 ) ) );
     }
}

QString FormWindow::fileName() const
{
    return ff->absFileName();
}

void FormWindow::setFileName( const QString &fn )
{
    ff->setFileName( fn );
    emit fileNameChanged( ff->fileName(), this );
}

void FormWindow::modificationChanged( bool m )
{
    emit modificationChanged( m, this );
    emit modificationChanged( m, ff->fileName() );
}

bool FormWindow::unify( QObject *w, QString &s, bool changeIt )
{
    bool found = !isMainContainer( w ) && qstrcmp( name(), s.latin1() ) == 0;
    if ( !found ) {
	QString orig = s;
	int num  = 1;
	QPtrDictIterator<QWidget> it( insertedWidgets );
	for ( ; it.current();) {
	    if ( it.current() != w &&
		 qstrcmp( it.current()->name(), s.latin1() ) == 0 ) {
		found = TRUE;
		if ( !changeIt )
		    break;
		s = orig + "_" + QString::number( ++num );
		it.toFirst();
	    } else {
		++it;
	    }
	}
	if ( !found ) {
	    QPtrList<QAction> al;
	    QAction *a = 0;
	    for ( a = actions.first(); a; a = actions.next() ) {
		QObjectList *l = a->queryList( "QAction" );
		al.append( a );
		for ( QObject *ao = l->first(); ao; ao = l->next() )
		    al.append( (QAction*)ao );
		delete l;
	    }
	    for ( a = al.first(); a; a = al.next() ) {
		if ( a != w &&
		     qstrcmp( a->name(), s.latin1() ) == 0 ) {
		    found = TRUE;
		    if ( !changeIt )
			break;
		    s = orig + "_" + QString::number( ++num );
		    a = actions.first();
		}
	    }
	}
	if ( ::qt_cast<QMainWindow*>(mainContainer()) && !found ) {
	    QObjectList *l = mainContainer()->queryList( "PopupMenuEditor" );
	    for ( QObject *o = l->first(); o; o = l->next() ) {
		if ( o != w &&
		     qstrcmp ( o->name(), s.latin1() ) == 0 ) {
		    found = TRUE;
		    if ( !changeIt )
			break;
		    s = orig + "_" + QString::number( ++num );
		    o = l->first();
		}
	    }
	    delete l;
	}
	if ( ::qt_cast<QMainWindow*>(mainContainer()) ) {
	    if ( !found ) {
		QObjectList *l = mainContainer()->queryList( "QDockWindow", 0, TRUE );
		for ( QObject *o = l->first(); o; o = l->next() ) {
		    if ( o != w &&
			 qstrcmp( o->name(), s.latin1() ) == 0 ) {
			found = TRUE;
			if ( !changeIt )
			    break;
			s = orig + "_" + QString::number( ++num );
			o = l->first();
		    }
		}
		delete l;
	    }
	}
    }

    if ( !found )
	return TRUE;
    return FALSE;
}

bool FormWindow::isCustomWidgetUsed( MetaDataBase::CustomWidget *w )
{
    QPtrDictIterator<QWidget> it( insertedWidgets );
    for ( ; it.current(); ++it ) {
	if ( it.current()->isA( "CustomWidget" ) ) {
	    if ( qstrcmp( WidgetFactory::classNameOf( it.current() ), w->className.utf8() ) == 0 )
		return TRUE;
	}
    }

    return FALSE;
}

bool FormWindow::isDatabaseWidgetUsed() const
{
#ifndef QT_NO_SQL
    QStringList dbClasses;
    dbClasses << "QDataTable"; // add more here
    QPtrDictIterator<QWidget> it( insertedWidgets );
    for ( ; it.current(); ++it ) {
	QString c( it.current()->className() );
	if ( dbClasses.contains( c ) > 0 ) {
	    return TRUE;
	}
    }
#endif
    return FALSE;
}

bool FormWindow::isDatabaseAware() const
{
#ifndef QT_NO_SQL
    if ( QString(mContainer->className()) == "QDesignerDataBrowser" || QString(mContainer->className()) == "QDesignerDataView" )
	return TRUE;
    return isDatabaseWidgetUsed();
#else
    return FALSE;
#endif
}

void FormWindow::visibilityChanged()
{
    if ( currTool != ORDER_TOOL ) {
	emitUpdateProperties( currentWidget() );
    } else {
	updateOrderIndicators();
	repositionOrderIndicators();
    }
}


/*!
  Maps \a pos in \a w's coordinates to the form's coordinate system.

  This is the equivalent to mapFromGlobal(w->mapToGlobal(pos) ) but
  avoids the two roundtrips to the X-Server on Unix/X11.
 */
QPoint FormWindow::mapToForm( const QWidget* w, const QPoint&  pos ) const
{
    QPoint p = pos;
    const QWidget* i = w;
    while ( i && !i->isTopLevel() && !isMainContainer( (QWidget*)i ) ) {
	p = i->mapToParent( p );
	i = i->parentWidget();
    }
    return mapFromGlobal( w->mapToGlobal( pos ) );
}

static int widgetDepth( QWidget *w )
{
    int d = -1;
    while ( w && !w->isTopLevel() ) {
	d++;
	w = w->parentWidget();
    }

    return d;
}

static bool isChildOf( QWidget *c, QWidget *p )
{
    while ( c && !c->isTopLevel() ) {
	if ( c == p )
	    return TRUE;
	c = c->parentWidget();
    }
    return FALSE;
}

QWidget *FormWindow::containerAt( const QPoint &pos, QWidget *notParentOf )
{
    QPtrDictIterator<QWidget> it( insertedWidgets );
    QWidget *container = 0;
    int depth = -1;
    QWidgetList selected = selectedWidgets();
    if ( rect().contains( mapFromGlobal( pos ) ) ) {
	container = mainContainer();
	depth = widgetDepth( container );
    }

    for ( ; it.current(); ++it ) {
	if ( ::qt_cast<QLayoutWidget*>(it.current())
	  || ::qt_cast<QSplitter*>(it.current()) )
	    continue;
	if ( !it.current()->isVisibleTo( this ) )
	    continue;
	if ( selected.find( it.current() ) != -1 )
	    continue;
	if ( !WidgetDatabase::isContainer( WidgetDatabase::idFromClassName( WidgetFactory::classNameOf( it.current() ) ) ) &&
	     it.current() != mainContainer() )
	    continue;

	// the rectangles of all ancestors of the container must contain the insert position
	QWidget *w = it.current();
	while ( w && !w->isTopLevel() ) {
	    if ( !w->rect().contains( ( w->mapFromGlobal( pos ) ) ) )
		break;
	    w = w->parentWidget();
	}
	if ( !( w == 0 || w->isTopLevel() ) ) continue; // we did not get through the full while loop

	int wd = widgetDepth( it.current() );
	if ( wd == depth && container ) {
	    if ( ( (QObjectList*)it.current()->parentWidget()->children() )->find( it.current() ) >
		 ( (QObjectList*)container->parentWidget()->children() )->find( container ) )
		wd++;
	}
	if ( wd > depth && !isChildOf( it.current(), notParentOf ) ) {
	    depth = wd;
	    container = it.current();
	}
    }

    return container;
}

bool FormWindow::isMainContainer( QObject *w ) const
{
    return w && w->isWidgetType() && ( w == (QWidget*)this || w == mainContainer() );
}

void FormWindow::setMainContainer( QWidget *w )
{
    bool resetPropertyWidget = isMainContainer( propertyWidget );
    if ( mContainer )
	insertedWidgets.remove( mContainer );
    if ( propertyWidget == mContainer )
	propertyWidget = 0;
    delete mContainer;
    mContainer = w;
    insertedWidgets.insert( mContainer, mContainer );
    delete layout();
    QHBoxLayout *l = new QHBoxLayout( this );
    l->addWidget( w );
    if ( resetPropertyWidget ) {
	QObject *opw = propertyWidget;
	propertyWidget = mContainer;
	if ( opw && opw->isWidgetType() )
	    repaintSelection( (QWidget*)opw );
    }
    if ( project() ) {
	LanguageInterface *iface = MetaDataBase::languageInterface( project()->language() );
	if ( iface && !project()->isCpp() && !isFake() ) {
	    if ( !MetaDataBase::hasFunction( this, "init()" ) )
		MetaDataBase::addFunction( this, "init()", "", "private", "function",
					   project()->language(), "void" );
	    if ( !MetaDataBase::hasFunction( this, "destroy()" ) )
		MetaDataBase::addFunction( this, "destroy()", "", "private", "function",
					   project()->language(), "void" );
	    if ( !MetaDataBase::hasConnection( this, mainContainer(), "shown()", mainContainer(), "init" ) )
		MetaDataBase::addConnection( this, mainContainer(), "shown()", mainContainer(), "init" );
	    if ( !MetaDataBase::hasConnection( this, mainContainer(), "destroyed()", mainContainer(), "destroy"  ) )
		MetaDataBase::addConnection( this, mainContainer(), "destroyed()",
					     mainContainer(), "destroy" );
	}
    }
}

bool FormWindow::savePixmapInline() const
{
    return pixInline;
}

bool FormWindow::savePixmapInProject() const
{
    return pixProject;
}

QString FormWindow::pixmapLoaderFunction() const
{
    return pixLoader;
}

void FormWindow::setSavePixmapInline( bool b )
{
    pixInline = b;
    if ( b )
	pixProject = FALSE;
}

void FormWindow::setSavePixmapInProject( bool b )
{
    pixProject = b;
    if ( b )
	pixInline = FALSE;
}

void FormWindow::setPixmapLoaderFunction( const QString &func )
{
    pixLoader = func;
}

void FormWindow::setActiveObject( QObject *o )
{
    emitShowProperties( o );
    propertyWidget = o;
}

void FormWindow::setProject( Project *pro )
{
    proj = pro;
}

Project *FormWindow::project() const
{
    return proj;
}

QAction *FormWindow::findAction( const QString &name )
{
    for ( QAction *a = actionList().first(); a; a = actionList().next() ) {
	if ( QString( a->name() ) == name )
	    return a;
	QAction *ac = (QAction*)a->child( name.latin1(), "QAction" );
	if ( ac )
	    return ac;
    }
    return 0;
}

void FormWindow::killAccels( QObject *top )
{
    QObjectList *l = top->queryList( "QAccel" );
    if ( !l )
	return;
    for ( QObject *o = l->first(); o; o = l->next() )
	( (QAccel*)o )->setEnabled( FALSE );
    delete l;
}

DesignerFormWindow *FormWindow::iFace()
{
    if ( !iface )
	iface = new DesignerFormWindowImpl( this );
    return iface;
}

bool FormWindow::isCentralWidget( QObject *w ) const
{
    if ( !::qt_cast<QMainWindow*>(mainContainer()) )
	return FALSE;
    return w == ( (QMainWindow*)mainContainer() )->centralWidget();
}

int FormWindow::layoutDefaultSpacing() const
{
    return defSpacing;
}

int FormWindow::layoutDefaultMargin() const
{
    return defMargin;
}

void FormWindow::setLayoutDefaultSpacing( int s )
{
    defSpacing = s;
}

void FormWindow::setLayoutDefaultMargin( int s )
{
    defMargin = s;
}

void FormWindow::setSpacingFunction( const QString &funct )
{
    spacFunction = funct;
}

QString FormWindow::spacingFunction() const
{
    return spacFunction;
}

void FormWindow::hasLayoutFunctions( bool b )
{
    hasLayoutFunc = b;
}

bool FormWindow::hasLayoutFunctions() const
{
    return hasLayoutFunc;
}

void FormWindow::setMarginFunction( const QString &funct )
{
    margFunction = funct;
}

QString FormWindow::marginFunction() const
{
    return margFunction;
}

FormFile *FormWindow::formFile() const
{
    return ff;
}

void FormWindow::setFormFile( FormFile *f )
{
    ff = f;
    if ( ff )
	connect( this, SIGNAL( modificationChanged(bool, const QString&) ), ff, SLOT( formWindowChangedSomehow() ) );
}

bool FormWindow::canBeBuddy( const QWidget *w ) const
{
    return w->focusPolicy() != QWidget::NoFocus;
}
